Andrew, after some checking I still have a lot off your questions unanswered. From what I can find it looks like IH changed the head, pistons and precups at MD engine serial # 14501. The head and precups were the same as a SMD with the bore size of piston the only difference. 4 inch overbore piston for a MD was the same standard piston as a SMD. Can't find a compression ratio listed separate for a MD engine below 14501 or above. But a UD6 power unit has a serial break on pistons and head like a MD (same parts) and shows a 16.8 compression ratio after the serial break, 14.2 before. I don't have a 8228 head to look at, but the only differance there could be with heads used on a SMD that could change the compression ratio, is the size or depth of valve pockets or precup holes or length. With the same valves used I doubt the pockets are deeper. If your head isn't cracked after all this time it must be a good one. Would probably keep it.
We sell tractor parts! We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today. [ About Us ]
Today's Featured Article - Experimental Tractors Article - by Danny Bowes (Dsl). Tractor technology appears to have nearly hit it's pinnacle of development. If you agreed with the subtitle, you are rather mistaken. Quite, actually. As a matter of fact, some of the technology experimented with over 40 years ago makes today's tractor technology seem absolutely stale by comparison. Experimentation, from the most complex assembly to the most simple and mundane component, is as an integral a part of any farm tractor's development
... [Read Article]
Latest Ad:
1964 I-H 140 tractor with cultivators and sidedresser. Starts and runs good. Asking 2650. CALL RON AT 502-319-1952
[More Ads]
All Rights Reserved. Reproduction of any part of this website, including design and content, without written permission is strictly prohibited. Trade Marks and Trade Names contained and used in this Website are those of others, and are used in this Website in a descriptive sense to refer to the products of others. Use of this Web site constitutes acceptance of our User Agreement and Privacy Policy
TRADEMARK DISCLAIMER: Tradenames and Trademarks referred to within Yesterday's Tractor Co. products and within the Yesterday's Tractor Co. websites are the property of their respective trademark holders. None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. John Deere and its logos are the registered trademarks of the John Deere Corporation. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V.
